Accelerated Testing: A Practitioner's Guide to Accelerated and Reliability Testing

2021 ◽  
Author(s):  
Bryan Dodson ◽  
◽  
Harry Schwab ◽  
Keyword(s):  
Quality Assurance ◽  
Practical Knowledge ◽  
Cost Savings ◽  
Accelerated Testing ◽  
Reliability Testing ◽  
Considerable Time ◽  
Testing Theory ◽  
Useful Life ◽  
Considerable Experience

The application of accelerated testing theory is a difficult proposition, yet one that can result in considerable time and cost savings, as well as increasing a product's useful life. In Accelerated Testing: A Practitioner's Guide to Accelerated and Reliability Testing, readers are exposed to the latest, most practical knowledge available in this dynamic and important discipline. Authors Bryan Dodson and Harry Schwab draw on their considerable experience in the field to present comprehensive, insightful views in this book. Development and quality assurance tests are defined in detail and are presented from a practical viewpoint. Included are testing fundamentals, plans and models, and equipment and methods most commonly used in accelerated testing. Individuals seeking to evaluate and improve the design lives of components and systems will find this book a valuable reference, with special attention being paid to testing in the mobility industries.

High-solar-absorptance CSP coating characterization and reliability testing with isothermal and cyclic loads for service-life prediction

2019 ◽  
Vol 12 (5) ◽  
pp. 1679-1694 ◽  
Author(s):  
Luka Noč ◽  
Ervin Šest ◽  
Gregor Kapun ◽  
Francisco Ruiz-Zepeda ◽  
Yaniv Binyamin ◽  
...  
Keyword(s):  
Service Life ◽  
Life Prediction ◽  
Accelerated Testing ◽  
Service Life Prediction ◽  
Materials Characterization ◽  
Cyclic Loads ◽  
Reliability Testing ◽  
Degradation Mechanisms ◽  
Solar Absorptance

Revealed degradation mechanisms in the HSA CSP coatings through accelerated testing and materials characterization enable absorber service life prediction.

Home bowel preparation for elective colonic procedures in children: Cost savings with quality assurance and improvement

2000 ◽  
Vol 35 (2) ◽  
pp. 232-234 ◽  
Author(s):  
S.A. Engum ◽  
M.E. Carter ◽  
D. Murphy ◽  
F.M. Breckler ◽  
G. Schoonveld ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Bowel Preparation ◽  
Cost Savings

The Permanence Properties of Flexible Urethan Foams

1964 ◽  
Vol 37 (1) ◽  
pp. 38-75 ◽  
Author(s):  
Samuel Steingiser ◽  
W. C. Darr ◽  
J. H. Saunders
Keyword(s):  
Aging Process ◽  
Accelerated Testing ◽  
Time Axis ◽  
Considerable Time ◽  
Experimental Systems ◽  
Test Conditions ◽  
Actual Use ◽  
The Common ◽  
Permanence Properties ◽  
End Use

Abstract The acceptance of urethan foam as a commercial product has hinged to an important extent on its permanence as a foam under all conditions of actual end use. Customer experience with commercial flexible urethan foams has confirmed the satisfactory service life of these materials. However, in the development of this industry, it was necessary to be able to predict the performance of experimental systems which later were to become fully commercial. Most often, this prediction had to be made very early, long before the materials were allowed to be put into end service. The common way to do this is by accelerated testing, wherein the time axis is condensed by stepping up the aging process well beyond any normal conditions. Considerable time and expense are saved in this kind of test; however, there is always the question that such an accelerated step-up of test conditions is not representative of actual use, and/or causes reactions in the sample which do not occur in normal use. It is important that these questionable features be reconciled before the intercomparability of accelerated and shelf-life testing is accepted.

Microstructure Development of Bearing Steel during Accelerated Carbide Spheroidisation

2014 ◽  
Vol 782 ◽  
pp. 123-128 ◽  
Author(s):  
Daniela Hauserova ◽  
Jaromir Dlouhý ◽  
Zbysek Novy
Keyword(s):  
Heat Treatment ◽  
Cost Savings ◽  
Bearing Steel ◽  
Annealing Process ◽  
Microstructure Development ◽  
Considerable Time ◽  
Processing Times ◽  
Treatment Processes ◽  
The Matrix

Carbide spheroidisation is a significant metallurgical process, which contributes to profound changes in microstructure and mechanical properties. Carbide spheroidising occurs through diffusion, which is a long-term and energy-demanding process. The holding times, sometimes up to tens of hours make soft annealing one of the most expensive heat treatment processes. The process was newly designed at the company COMTES FHT shortens carbide spheroidising several times and therefore delivers considerable time and cost savings. The heat treatment was performed using induction heating. The purpose of this annealing process is to obtain globular carbides uniformly distributed in the matrix and to achieve overall softening. The present paper explores the effect of the newly-designed thermal schedules on the cementite lamellae fragmentation, on the decrease in hardness in bearing steel grade 100CrMnSi6-4 and on processing times.

Behaviour and Mean Life Prediction of Solar Mirrors from Parabolic Trough Collectors under Accelerated Degradation/Reliability Testing

2014 ◽  
Vol 656 ◽  
pp. 442-449 ◽  
Author(s):  
Sebastian Marian Zaharia ◽  
Camil Lancea ◽  
Lucia Antoneta Chicoș ◽  
Giampaolo Caputo
Keyword(s):  
Life Prediction ◽  
Salt Spray ◽  
Operating Conditions ◽  
Accelerated Testing ◽  
Reliability Testing ◽  
Parabolic Trough ◽  
Testing Conditions ◽  
Accelerated Degradation ◽  
Development Costs ◽  
The Mean

The scope of this paper is focuses on the study of the behaviour and of the mean life of materials (solar mirrors from parabolic - trough collectors) from the field of renewable energies, using accelerated degradation/reliability testing. This paper is focused on influence of environmental factors (temperature, humidity, UV and salt spray) at mean life of solar mirrors from parabolic - trough collectors under accelerated testing conditions. In today’s highly competitive environment, companies are pressured to shorten their development cycles, reduce development costs and produce highly reliable products. Accelerated reliability/durability tests are a very powerful tool in achieving these goals, providing the means to observe failures more rapidly under higher-stress operating conditions while accurately predicting reliability under normal operating conditions.

scholarly journals New System to Increase the Useful Life of Exhausted Barrels in Red Wine Aging

Foods ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1686
Author(s):  
Francisco Javier Flor-Montalvo ◽  
Agustín Sánchez-Toledo Ledesma ◽  
Eduardo Martínez Cámara ◽  
Emilio Jiménez-Macías ◽  
Julio Blanco-Fernández
Keyword(s):  
Quality Assurance ◽  
Red Wine ◽  
Red Wines ◽  
Physical Chemical ◽  
Useful Life ◽  
Oak Barrels ◽  
Fine Wood ◽  
Wine Aging ◽  
Intense Color ◽  
New System

In recent years, consumers of red wines have demanded aged wines with intense color and a well-integrated fine wood bouquet. Traditionally, wines with these characteristics have been obtained from aging in oak barrels. This type of vinification incurs high costs, including costs associated with the acquisition and use of oak barrels. After five or six vinifications, these barrels are no longer capable of providing an adequate contribution of wood compounds to the wine, because of the exhaustion of their transfer capacity. An alternative to extend the life of these barrels is the introduction of toasted oak staves inside the barrel. In this study, a comparative analysis of the aging of a red wine in new and renewed barrels was developed by inserting toasted staves and analyzing the wine in its different stages, as well as its physical, chemical, and colorimetric characteristics. This study confirms that the use of insert staves anchored in exhausted barrels helps to prolong the useful life of barrels, while maintaining quality assurance.

The inclusion of guidance and counseling program into basic education curriculum for quality assurance

2019 ◽  
Vol 2 (2) ◽  
pp. 33-43
Author(s):  
OLUDARE Bosede Abiola ◽  
Afolabi Tosin Paul
Keyword(s):  
Quality Assurance ◽  
Basic Education ◽  
Practical Knowledge ◽  
Education Programme ◽  
Guidance And Counseling ◽  
Education Curriculum ◽  
Junior Secondary Schools ◽  
Descriptive Research ◽  
Junior Secondary ◽  
The Right

The study examined the inclusion of guidance and counselling programme into basic education curriculum for quality assurance in basic education. The study employed the use of descriptive research design. The sample consisted of two hundred basic education teachers in primary and junior secondary schools in Ondo West Local Government Area of Ondo State. Four research questions were raised. The use of self – designed questionnaire was employed which was validated by experts from curriculum studies and Educational Foundations and Counselling. The data gathered was analyzed with mean rank and standard deviation. The findings of the result shows the various guidance and counselling programmes to be included into basic education curriculum, the benefits derived from the inclusion of guidance and counselling programmes into basic education curriculum, the relationship between basic education and guidance and counselling and the challenges on the inclusion of guidance and counselling into basic education curriculum. Based on the findings, the study makes the following recommendations among others: Formal vocational education to be introduced at the Basic education level, so that pupils would be guided into the right thinking of appropriate careers to be perused, training and retraining of professionally qualified counsellors on regular basis and they should be involved in the formulation and implementation of curriculum for the basic education programme, well trained and competent Guidance and Counselling personnel, with thorough theoretical and practical knowledge, must be employed at schools. These people can help teachers to cope and deal with learners efficiently, government should provide adequate funds to all basic education in the country.

scholarly journals A Multidisciplinary Hospital-based Antimicrobial Use Program: Impact on Hospital Pharmacy Expenditures and Drug Use

1996 ◽  
Vol 7 (2) ◽  
pp. 104-109 ◽  
Author(s):  
Suzette Salama ◽  
Coleman Rotstein ◽  
Lionel Mandell
Keyword(s):  
Quality Assurance ◽  
Hospital Pharmacy ◽  
Cost Savings ◽  
Antimicrobial Use ◽  
Canadian Hospital ◽  
Drug Budget ◽  
Program Impact ◽  
Use Patterns ◽  
Antimicrobial Prescribing ◽  
Prescribing Behaviour

The authors’ hospital embarked on a three-component, multidisciplinary, hospital-based antimicrobial use program to cut costs and reduce inappropriate antimicrobial use. Initially, antimicrobial use patterns and costs were monitored for 12 months. For the next two years, an antimicrobial use program was implemented consisting of three strategies: automatic therapeutic interchanges; antimicrobial restriction policies; and parenteral to oral conversion. The program resulted in a reduction in the antimicrobial portion of the total pharmacy drug budget from 41.6% to 28.2%. Simultaneously, the average cost per dose per patient day dropped from $11.88 in 1991 to $10.16 in 1994. Overall, mean monthly acquisition cost savings rose from $6,810 in 1992 to $27,590 in 1994. This study demonstrates that a multidisciplinary antimicrobial use program in a Canadian hospital can effect dramatic cost savings and serve as a quality assurance activity of physician antimicrobial prescribing behaviour.

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